Originally Posted By: hate2work
Originally Posted By: Donald
Originally Posted By: hate2work
Originally Posted By: crinkles
Originally Posted By: hate2work
Originally Posted By: crinkles
give it 1,000 miles between back to back drain and fills to mix well. I only had to do it twice and always looks brand new now.
1000 miles? That's a bit much methinks
When doing back to back drain and refills, it's pretty easy to tell it's fairly well mixed even if you only drive around the block a couple of times.
I think if you pulled a cooler line you would see how easy it is. The fluid only comes out at about 1 PT per minute so you can easily watch the 2 QTs come out and shut the engine off without a helper. With a helper its even easier.
If you do not have a drain plug then its definetly.
Did I mention this is also a much greener way to do it as you are only using the total fill amount?
well at least you get some use out of the fresh fluid. the 30% new can be used for 1000 miles before dumping out. Why dump that new fraction after 2 miles? effect is the same and you spread your costs. i waited 5,000km between my drain and fills.
I completely agree with you, in most cases a single drain and refill is all that's needed, especially if you're on a regular maintenance schedule. But doing the back to back D and R is the way to go for neglected trannies.
Plus there is the convenience factor. It's just as easy to do a D and R, drive for a bit, then do it again right away while your ramps, tools, etc., are still out.
And if you're switching to synthetics, and you don't want to do a complete flush, back to backs will get more of the good stuff in there faster
Why do back to back drain and refills when a cooler line flush will exchange above 90% of the fluid for close to the same about of fluid used in two drain and refills. Make no sense to me if you have easy access to the cooler lines.
Of course it makes no sense to you, because you're thinking like someone who knows how to do that job. But many people have never done that/ don't feel competent enough to do that, and for those people, back to back drain and refills makes perfect sense.
Does that make sense?
Originally Posted By: Donald
Originally Posted By: hate2work
Originally Posted By: crinkles
Originally Posted By: hate2work
Originally Posted By: crinkles
give it 1,000 miles between back to back drain and fills to mix well. I only had to do it twice and always looks brand new now.
1000 miles? That's a bit much methinks
When doing back to back drain and refills, it's pretty easy to tell it's fairly well mixed even if you only drive around the block a couple of times.
I think if you pulled a cooler line you would see how easy it is. The fluid only comes out at about 1 PT per minute so you can easily watch the 2 QTs come out and shut the engine off without a helper. With a helper its even easier.
If you do not have a drain plug then its definetly.
Did I mention this is also a much greener way to do it as you are only using the total fill amount?
well at least you get some use out of the fresh fluid. the 30% new can be used for 1000 miles before dumping out. Why dump that new fraction after 2 miles? effect is the same and you spread your costs. i waited 5,000km between my drain and fills.
I completely agree with you, in most cases a single drain and refill is all that's needed, especially if you're on a regular maintenance schedule. But doing the back to back D and R is the way to go for neglected trannies.
Plus there is the convenience factor. It's just as easy to do a D and R, drive for a bit, then do it again right away while your ramps, tools, etc., are still out.
And if you're switching to synthetics, and you don't want to do a complete flush, back to backs will get more of the good stuff in there faster
Why do back to back drain and refills when a cooler line flush will exchange above 90% of the fluid for close to the same about of fluid used in two drain and refills. Make no sense to me if you have easy access to the cooler lines.
Of course it makes no sense to you, because you're thinking like someone who knows how to do that job. But many people have never done that/ don't feel competent enough to do that, and for those people, back to back drain and refills makes perfect sense.
Does that make sense?
